/* 
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using System;

namespace Lucene.Net.Util
{
    
    /// <summary> Returns primitive memory sizes for estimating RAM usage.
    /// 
    /// </summary>
    public abstract class MemoryModel
    {
        /// <value> size of array beyond contents </value>
        public abstract int ArraySize { get; }

        /// <value> Class size overhead </value>
        public abstract int ClassSize { get; }

        /// <param name="clazz">a primitive Class - bool, byte, char, short, long, float,
        /// short, double, int
        /// </param>
        /// <returns> the size in bytes of given primitive Class
        /// </returns>
        public abstract int GetPrimitiveSize(System.Type clazz);

        /// <value> size of reference </value>
        public abstract int ReferenceSize { get; }
    }
}